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Use historic data for watering level calculation with Dark Sky

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This commit is contained in:
Matthew Oslan
2019-05-13 19:41:00 -04:00
parent 57e726da3e
commit e1750287b3
2 changed files with 23 additions and 24 deletions
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34
routes/weatherProviders/DarkSky.ts
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@@ -1,35 +1,29 @@
import * as moment from "moment-timezone";
import { GeoCoordinates, WateringData, WeatherData, WeatherProvider } from "../../types";
import { httpJSONRequest } from "../weather";
async function getDarkSkyWateringData( coordinates: GeoCoordinates ): Promise< WateringData > {
const DARKSKY_API_KEY = process.env.DARKSKY_API_KEY,
forecastUrl = `https://api.darksky.net/forecast/${DARKSKY_API_KEY}/${coordinates[0]},${coordinates[1]}`;
// The Unix timestamp of 24 hours ago.
const timestamp: number = moment().subtract( 1, "day" ).unix();
let forecast;
const DARKSKY_API_KEY = process.env.DARKSKY_API_KEY,
historicUrl = `https://api.darksky.net/forecast/${DARKSKY_API_KEY}/${coordinates[0]},${coordinates[1]},${timestamp}`;
let historicData;
try {
forecast = await httpJSONRequest( forecastUrl );
historicData = await httpJSONRequest( historicUrl );
} catch (err) {
// Indicate watering data could not be retrieved if an API error occurs.
return undefined;
}
let totalTemp = 0,
totalHumidity = 0,
totalPrecip = 0;
const periods = Math.min( forecast.hourly.data.length, 30 );
for ( let index = 0; index < periods; index++ ) {
totalTemp += forecast.hourly.data[ index ].temperature;
totalHumidity += forecast.hourly.data[ index ].humidity * 100;
totalPrecip += forecast.hourly.data[ index ].precipIntensity;
}
return {
temp: totalTemp / periods,
humidity: totalHumidity / periods,
precip: totalPrecip,
raining: forecast.currently.precipType === "rain"
// Calculate average temperature for the day using hourly data.
temp : historicData.hourly.data.reduce( ( sum, hourlyData ) => sum + hourlyData.temperature, 0 ) / historicData.hourly.data.length,
humidity: historicData.daily.data[ 0 ].humidity * 100,
precip: historicData.daily.data[ 0 ].precipIntensity * 24,
raining: historicData.currently.precipType === "rain"
};
}

13
types.ts
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@@ -48,14 +48,19 @@ export interface WeatherDataForecast {
description: string;
}
/**
* Data from a 24 hour window that is used to calculate how watering levels should be scaled. This should ideally use
* historic data from the past day, but may also use forecasted data for the next day if historical data is not
* available.
*/
export interface WateringData {
/** The average forecasted temperature over the next 30 hours (in Fahrenheit). */
/** The average temperature over the window (in Fahrenheit). */
temp: number;
/** The average forecasted humidity over the next 30 hours (as a percentage). */
/** The average humidity over the window (as a percentage). */
humidity: number;
/** The forecasted total precipitation over the next 30 hours (in inches). */
/** The total precipitation over the window (in inches). */
precip: number;
/** A boolean indicating if it is currently raining. */
/** A boolean indicating if it is raining at the time that this data was retrieved. */
raining: boolean;
}